Each vowel in the word ICTERID is changed to the letter immediately following it in the English alphabetical order and each consonant is changed to the letter immediately preceding it in the English alphabetical order. How many letters will appear exactly twice in the group of letters thus formed?

In a certain code language, 'HEAR' is coded as '3692' and 'REAL' is coded as '2983'. What is the code for 'L' in that language?

In a certain code: 'he and i are' is coded as 'wq sa xz cv' 'i are not that' is coded as 'xz cv fd er' 'great friend and now' is coded as 'yt gh sa bv' 'i that ever friend' is coded as 'xz er bn gh' (All codes are two-letter codes only) What is the possible code for 'now'?